EP2416374A1 - Module de cellule solaire comportant des couches conçues pour une intégration dans des bâtiments - Google Patents

Module de cellule solaire comportant des couches conçues pour une intégration dans des bâtiments Download PDF

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Publication number
EP2416374A1
EP2416374A1 EP09842733A EP09842733A EP2416374A1 EP 2416374 A1 EP2416374 A1 EP 2416374A1 EP 09842733 A EP09842733 A EP 09842733A EP 09842733 A EP09842733 A EP 09842733A EP 2416374 A1 EP2416374 A1 EP 2416374A1
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EP
European Patent Office
Prior art keywords
tempered glass
external
solar cell
module
buildings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09842733A
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German (de)
English (en)
Other versions
EP2416374A4 (fr
EP2416374B1 (fr
Inventor
Je-Min Yu
Dong-Hun No
Dong-Sik Jang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LX Hausys Ltd
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LG Hausys Ltd
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Filing date
Publication date
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Publication of EP2416374A1 publication Critical patent/EP2416374A1/fr
Publication of EP2416374A4 publication Critical patent/EP2416374A4/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10788—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing ethylene vinylacetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10247—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/0488—Double glass encapsulation, e.g. photovoltaic cells arranged between front and rear glass sheets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/20—Supporting structures directly fixed to an immovable object
    • H02S20/22—Supporting structures directly fixed to an immovable object specially adapted for buildings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/60—Planning or developing urban green infrastructure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a solar cell module for integration into buildings, and particularly to a solar cell module for integration into buildings, which is provided with layers of design so as to provide a differentiated design service.
  • a solar cell is a semiconductor device which converts light energy into electric energy using the photoelectric effect.
  • the solar cell includes two semiconductor thin films having positive and negative polarities.
  • the multiple solar cells are connected in series or parallel in order to generate desired voltage and current required by a user, so that the user can utilize power generated from the solar cells.
  • the solar cell is a pollution-free alternative energy resource which does not use fossil fuels but uses only solar heat.
  • One unit cell of the solar cell generates a very small voltage of about 0.5V and is easily affected by the external environment. Therefore, the unit cell is packaged into a module, and multiple modules connected with each other according to application purposes form a solar cell array.
  • a bulk-type cell is formed into a module of which upper and lower portions is covered or protected in the same way.
  • a thin film cell is formed into a module including a substrate.
  • the module is generally comprised of a cell, a surface member, a filler, a black sheet, a sealant and a frame member.
  • Whiteboard tempered glass is used as the surface member in order to extend the life span thereof.
  • EVA Ethylene Vinyl Acetate
  • PVF Poly Vinyl Fluoride
  • Other materials such as polyester and acryl may be also used as the black sheet material, and the black sheet member is covered by aluminum foil or polyester in order to improve moisture resistance.
  • the sealant is used to treat an entrance of a lid portion or an end face of the module, and butyl rubber out of a group of silicon sealant, polyurethane, polysulfide and butyl rubber is frequently used as the sealant.
  • butyl rubber out of a group of silicon sealant, polyurethane, polysulfide and butyl rubber is frequently used as the sealant.
  • surface oxidized aluminum is used as a panel material, and rubber may be used.
  • Fig. 9 shows the configuration of a conventional solar cell module.
  • the solar cell module 101 is supported by a frame 109, and comprised of an upper rubber profile 102, a tempered glass panel 103, an upper EVA film 104, a cell 105, a lower EVA film 106, a back sheet 107 and a lower rubber profile 108.
  • the rubber profile 102, 108 as the sealant is made of rubber.
  • the tempered glass panel 103 as the surface member functions to protect the cell 105 from external shock.
  • the EVA film 104, 106 as the filler is a vinyl film made of a copolymer of ethylene and vinyl acetate and having excellent transparency, shock absorbing ability, elasticity and tensile strength.
  • the cell 105 functions to convert light energy into electric energy. Multiple cells are arranged in series or parallel by conductive ribbon.
  • the back sheet 107 has waterproofing, insulating and UV protecting functions and is made of PVF, polyester, acryl and the like.
  • the frame 109 made of aluminum and the like functions to support each element of the module 101.
  • the conventional solar cell module is comprised of the tempered glass panel, the EVA film, the cell, the EVA film and the back sheet, when seeing from an upper side thereof.
  • the design of the module is determined by colors of the cell and back sheet and arrangement of the cell.
  • the solar cell module has a simple and monotonous design, and thus it is difficult to provide a differentiated design service.
  • a conventional glass-glass (G-G) type solar cell module is comprised of the tempered glass panel, the EVA film, the cell, the EVA film and the tempered glass panel, when seeing from an upper side thereof.
  • the design of the module is determined by colors of the cell and back sheet and arrangement of the cell.
  • the solar cell module has a simple and monotonous design, and thus it is also difficult to provide the differentiated design service.
  • a BIPV(Building Integrated Photo Voltaic) module is designed as a part of a building from an early state of building design so as to be integrated with the building (integration into buildings). Since the BIPV module is used as an exterior material for buildings, it is possible to reduce the corresponding cost. Further, since it can be harmonized with buildings, it is possible to increase an additional value of buildings. However, there are also some disadvantages in that it is necessary to concern some conditions such as temperature and it can be applied only to a new building or only when largely remodeling an existing building.
  • a PVIB(Photo Voltaic In Building) module is not designed essentially as a part of a building from then early state of building design, but attached or installed to the building after the building is completely constructed. In this module, it is relatively facile to perform its installation, and it can be applied to both of new and existing buildings. However, there are also some disadvantages in that it is necessary to provide a separate supporting structure and it may be not harmonized with the building to be installed.
  • a crystalline PV (including BIPV) module system is generally set so that it has optimum efficiency when being exposed to direct sunlight. Due to the nature of the solar cell, the efficiency thereof may be largely changed according to an incident angle of light and a light intensity. In order to maximize the efficiency with respect to the incident angle, there has been proposed a method which is provided with a sun tracking system so as to maintain an optimal azimuth angle. However, in order to use the sun tracking system, it is necessary to overcome disadvantages in a structure of the building and a cost thereof.
  • Korean Patent Laid-Open No. 2003-81662 discloses a solar cell with a double-layer antireflection film.
  • a cell substrate has a concavo-convex structure having regular inverted pyramid patterns.
  • it pertains to the concavo-convex structure formed on a surface of the cell, not tempered glass.
  • Korean Patent No. 359846 discloses a solar cell module as a construction material
  • Korean Patent No. 680654 discloses a solar cell module with an integrated light emitting device.
  • the solar cell modules have a simple and monotonous design, and it is also difficult to provide a differentiated design service.
  • a cold facade has been used in order to use the solar cell as a solar cell module for integration into buildings.
  • the term "facade" refers to the front of the building. Because the façade of a building has a big effect on the first impression of the building, it is a current trend to apply a glass façade as a construction material at a front surface of the building. Recently, a warm façade using a solar cell module is required to obtain durability, thermal insulation effect and alternative energy.
  • Fig. 1 is a cross-sectional view of an example of a conventional cold facade.
  • the cold facade has a double-layered wall structure including an internal wall and an external wall.
  • the internal wall 3 is fixed to a base member 2 formed of concrete placed on the ground 1 so as to support the building on the ground 1.
  • An insulation member 4 is provided at an outside of the internal wall 3, and a support 5 is formed at upper and lower sides of the internal wall 3 so that the external wall 6 including a solar cell for decoration can be fixed to the internal wall 3 through the support 5.
  • an air layer is formed between the insulation member 4 and the external wall 6 so as to allow ventilation with the outside, thereby minimizing power reduction due to temperature of the module.
  • a double insulation wall has to be additionally provided for wiring and blocking of temperature of outer air.
  • the cold façade blocks penetration of light, it is structurally unsuitable to use it.
  • a solar cell module for integration into buildings is required, which can be easily installed, can provide various design patterns and can be used as an exterior material for the buildings.
  • An object of the present invention is to provide a solar cell module for integration into buildings, which can apply various design patterns to a double glass module including internal and external tempered glass panels, thereby improving outer appearance of the buildings and providing a differentiated design service.
  • Another object of the present invention is to a solar cell module for integration into buildings, which can improve energy efficiency.
  • Yet another object of the present invention is to a solar cell module for integration into buildings, which can provide an awning effect according to an injection degree of glass ink.
  • Yet another object of the present invention is to a solar cell module for integration into buildings, which can provide thermal insulating and noise preventing effect by the double glass module including internal and external tempered glass panels
  • Yet another object of the present invention is to a solar cell module for integration into buildings, of which the double glass module can be directly used as an external wall of the buildings without installing a separate external wall of the buildings.
  • Yet another object of the present invention is to a solar cell module for integration into buildings, which uses a double sealing system including TPS(Thermo Plastic System), thereby providing excellent thermal insulating ability and wind pressure resistance.
  • TPS Thermo Plastic System
  • the present invention provides a solar cell module for integration into buildings, including external and internal tempered glass panels which are used as external walls of the buildings having a steel frame structure; and a double glass module which is disposed between the external and internal tempered glass panels, wherein the double glass module is comprised in turn of a first ethylene vinyl acetate film, a cell, a second ethylene vinyl acetate film, an opaque design sheet, a third ethylene vinyl acetate film and a back sheet.
  • the present invention provides a solar cell module for integration into buildings, including external and internal tempered glass panels which are used as external walls of the buildings having a steel frame structure; and a double glass module which is disposed between the external and internal tempered glass panels, wherein the double glass module is comprised in turn of a first ethylene vinyl acetate film, a cell, a second ethylene vinyl acetate film, a semitransparent design sheet and a third ethylene vinyl acetate film.
  • the present invention provides a solar cell module for integration into buildings, including external and internal tempered glass panels which are used as external walls of the buildings having a steel frame structure; and a double glass module which is disposed between the external and internal tempered glass panels, wherein the double glass module is comprised in turn of a first ethylene vinyl acetate film, a cell, a second ethylene vinyl acetate film, a reflective design sheet, a third ethylene vinyl acetate film and a back sheet.
  • the present invention provides a solar cell module for integration into buildings, including external and internal tempered glass panels which are used as external walls of the buildings having a steel frame structure; and a double glass module which is disposed between the external and internal tempered glass panels, wherein the double glass module is comprised in turn of a first ethylene vinyl acetate film, a cell, a second ethylene vinyl acetate film and a glass ink coated layer.
  • the glass ink coated layer is formed by screen-printing a desired design pattern on a surface of the internal tempered glass panel through a spraying operation using glass ink and then heat-curing the design pattern at a temperature of 500 to 800°C so that the glass ink is fused into and attached to the surface of the internal tempered glass panel.
  • At least one of the external and internal tempered glass panels is a refractive tempered glass panel having a concavo-convex structure.
  • the concavo-convex structure has a triangular shape in section, and a front corner angle of the triangular shape is 50 to 60 degrees.
  • the concavo-convex structure is also formed on a surface of the cell, and the concavo-convex structures of the cell and the refractive tempered glass panel are coincided with each other.
  • an edge portion between the external and internal tempered glass panels is sealed with a sealant.
  • the sealant comprises a first sealant formed of BU-TPS containing an isobutylene polymer and a thermoplastic polymer, and a second sealant which is applied to an outside portion of the first sealant and formed of Thiokol.
  • a junction box and a cable are installed at the double glass module.
  • the double glass module is vertically disposed on a base member and supported by a supporting frame.
  • the solar cell module for integration into buildings of the present invention which can be used as an exterior material for the buildings, has the design elements, it is possible to maximize an exterior effect and also to produce high value modules. And in case of the reflective design sheet, it is possible to prevent temperature rise and to increase the efficiency by reflecting sunlight.
  • the refractive tempered glass panel it is possible to always allow the light to be vertically incident to the cell, thereby increasing the energy efficiency, and thus it is possible to produce more electricity.
  • the double glass module including the external and internal tempered glass panels since various design patterns can be applied to the double glass module including the external and internal tempered glass panels, it is possible to improve the appearance of the buildings and to provide the awning effect according to an injection degree of glass ink. And it is also possible to provide thermal insulating and noise preventing effects by using the double glass module including the external and internal tempered glass panels. Since the double glass module is directly applied to the external wall of the buildings, it can be facilely disposed at the buildings without installing separate internal walls.
  • the double sealing system including TPS(Thermo Plastic System)
  • TPS Thermo Plastic System
  • Fig. 2 is a cross-sectional view showing a state that a solar cell module for integration into buildings is installed in a warm facade manner according to an embodiment of the present invention.
  • a double glass module 10 is directly installed at an external wall of a building (not shown).
  • a separate internal tempered glass 18 is disposed inside an external tempered glass in order to improve durability and insulation performance thereof.
  • the double glass module 10 is disposed to be vertical to the ground 1 and a base member 2 such as concrete placed on the ground 1.
  • Upper and lower sides of a supporting means such as a supporting frame 20 are attached to other side surface of the internal tempered glass panel 18, and a lower end of the supporting means is attached to the base member 2 so as to support the double glass module 10.
  • Fig. 3 is a cross-sectional view of a double glass module according to a first embodiment of the present invention.
  • the double glass module 10a is comprised of an external tempered glass panel 11, a first EVA film 12, a cell 13, a second EVA film 14, an opaque design sheet 15a, a third EVA film 16, a back sheet 17 and an internal tempered glass panel 18, when seeing from a left side thereof.
  • the internal and external tempered glass panels 11 and 18 directly serve as external walls of the buildings and also function to protect the cell 13 from external shock and the like.
  • the internal and external tempered glass panels 11 and 18 may be a flat tempered glass panel or a refractive tempered glass panel shown in Fig. 8 .
  • a concavo-convex structure is formed on a surface of the refractive tempered glass panel.
  • the concavo-convex structure has a triangular shape in section in order to obtain the optimal efficiency of incident angle.
  • An angle of the concavo-convex structure is more important than a width or depth thereof, and the angle is preferably 50 to 60 degrees based on a front corner angle of the triangular shape.
  • the refractive tempered glass panel used in the invention is manufactured by etching a tempered glass panel so that the concavo-convex structure is formed thereon. Glass etching is more facile, efficient and cheaper than cell etching.
  • the concavo-convex structure is formed by etching a tempered glass panel using laser, chemicals and the like. Like a prism film for notebook computers, the etching process has to be minutely performed within an extent that the human body is not harmed by an etched surface. And it should be also prevented that a top portion of an etched layer is excessively protruded and thus worn.
  • the first, second and third EVA films 12, 14 and 16 function as the filler and attaching means, and they are a vinyl film made of a copolymer of ethylene and vinyl acetate and having excellent transparency, shock absorbing ability, elasticity and tensile strength. Further, since the vinyl film has high gas barrier ability, excellent organic solvent ability and workability, it is facile to perform a thermoforming operation.
  • the cell 13 functions to convert light energy into electric energy, and multiple cells are arranged in series or parallel by conductive ribbon.
  • the cell 13 also has the concavo-convex structure corresponding to that of the refractive tempered glass panel. Therefore, it is possible to maximize the energy efficiency due to the synergy between the concavo-convex structures.
  • a design pattern is formed on various sheets such as paper, fiber sheet, synthetic resin sheet, metal sheet, inorganic sheet, woody sheet, glass sheet and leather sheet using various methods such as printing, coating, lapping, deposition, sputtering, painting, plating, impregnation and etching.
  • the back sheet 17 has waterproofing, insulating and UV protecting functions and is made of PVF, polyester, acryl and the like.
  • the back sheet 17 may be a sheet in which fluoro resin having higher weather resistance than the existing PVF film is coated with a polyethylene terephthalate (PET), thereby providing excellent long durability, vapor blocking ability, electric insulating ability and adhesive property with a sealant.
  • PET polyethylene terephthalate
  • Fig. 4 is a cross-sectional view of a double glass module according to a second embodiment of the present invention.
  • the double glass module 10b is comprised of an external tempered glass panel 11, a first EVA film 12, a cell 13, a second EVA film 14, a semitransparent design sheet 15b, a third EVA film 16 and an internal tempered glass panel 18, when seeing from a left side thereof.
  • a design pattern is formed on various sheets such as paper, fiber sheet, synthetic resin sheet, metal sheet, inorganic sheet, woody sheet, glass sheet and leather sheet using various methods such as printing, coating, lapping, deposition, sputtering, painting, plating, impregnation and etching.
  • Fig. 5 is a cross-sectional view of a double glass module according to a third embodiment of the present invention.
  • the double glass module 10c is comprised of an external tempered glass panel 11, a first EVA film 12, a cell 13, a second EVA film 14, a reflective design sheet 15c, a third EVA film 16, a back sheet 17 and an internal tempered glass panel 18, when seeing from a left side thereof.
  • it is possible to increase energy efficiency and to prevent temperature-rise by reflecting sunlight.
  • the reflective design sheet 15c a design pattern is formed on various sheets such as paper, fiber sheet, synthetic resin sheet, metal sheet, inorganic sheet, woody sheet, glass sheet and leather sheet using various methods such as printing, coating, lapping, deposition, sputtering, painting, plating, impregnation and etching.
  • the sheet may be a metallic reflective sheet like aluminum foil, polymer reflective sheet and retroreflective sheet.
  • Fig. 6 is a cross-sectional view of a double glass module according to a fourth embodiment of the present invention.
  • the double glass module 10d is comprised of an external tempered glass panel 11, a first EVA film 12, a cell 13, a second EVA film 14, a glass ink coated layer 15d and an internal tempered glass panel 18, when seeing from a left side thereof.
  • a desired design pattern is screen-printed on a surface of the internal tempered glass panel 18 through a spraying operation using glass ink, and then preferably heat-cured at a temperature of 500 to 800°C so that the glass ink is fused into and attached to the surface of the internal tempered glass panel 18.
  • the glass ink coated layer 15d is not deteriorated and discolored, it can be used permanently. Further, by using the glass ink as well as the solar cell pattern, various design patterns can be provided over the entire surface of the internal tempered glass panel 128 of the double glass module 10, thereby providing various appearances of the buildings.
  • Fig. 7 is a cross-sectional view showing a state that a sealant and a junction box are installed at the double glass module according to a first embodiment of the present invention. Edge portions between the internal and external tempered glass panels 11 and 18 are treated by a sealant 19a, 19b so as to maintain airtightness therebetween.
  • the sealant 19a, 19b may typically be a silicon-based sealant, and preferably a double sealing system including a first sealant 19a formed of TPS and a second sealant 19b formed of Thiokol.
  • the first sealant 19a is comprised of a sealing composition containing a base polymer and a selected additional component.
  • the base polymer may be comprised of an isobutylene homopolymer, copolymer, trimer, or a compound thereof; or an acrylate and/or methacrylate monopolyer and/or copolymer or a compound thereof.
  • the additional component may be a thermoplastic polymer, natural and synthetic rubber, an adhesion-imparting additive, a plasticizer, a binder, a reinforcing and non-reinforcing filler, a stabilizer and other additive.
  • the thermoplastic polymer may be polyolefin polymer and copolymer.
  • the thermoplastic polymer may be synthesized from ethylene, propylene and n-butene monomer, a higher homologue thereof, and an isomer thereof, and also synthesized from functional vinyl compound such as vinyl acetate, vinyl chloride, styrene and ⁇ -methylstyrene.
  • the thermoplastic polymer may be polyamide, polyimide, polyacetal, polycarbonate, polyester, polyurethane and the like.
  • the first sealant 19a is formed of BU-TPS (e.g., Naftotherm BU-TPS prepared by chemetal company, German) as an edge sealing compound based on an isobutylene polymer, which contains a thermoplastic polymer so as to provide permanent flexibility.
  • BU-TPS e.g., Naftotherm BU-TPS prepared by chemetal company, German
  • isobutylene polymer which contains a thermoplastic polymer so as to provide permanent flexibility.
  • the first sealant 19a may contain moisture absorbent such as zeolite.
  • the second sealant 19b is formed of Thiokol.
  • the Thiokol is a proprietary name for polysulfide rubber prepared by Thiokol Chemical Co., USA.
  • the Thiokol is prepared by a condensation reaction of alkali polysulfide and an organic compound having a halogen group at both ends thereof.
  • the edge sealing system is comprised of an aluminum space, a moisture absorbent filled in the spacer, an internal sealant made of butyl (a non-curing sealant based on polyisobutylene), which is attached to both outer surfaces of the spacer, and an external sealant formed of Thiokol and the like.
  • TPS edge sealing system used in the present invention, three functions of the conventional aluminum spacer, the moisture absorbent and the internal sealant made of butyl are combined into one, high quality of glass product can be achieved due to a low gas leakage rate, it is possible to achieve high production speed and the small number of laborers (about one laborer) and to maintain the high quality of the product, due to its automatic operation, the heat loss is minimized due to its non-metallic material, the dew condensation is reduced due to reduction in heat conduction, and its structural strength is increased due to absorbing of shock.
  • the close contacting ability is improved, the amount of the moisture absorbent is constant since the moisture absorbent can be constantly distributed in TPS, thereby providing the uniform moisture absorbing ability, the sealing line is clear and uniform even at the curved portion thereof, and thus it is possible to produce various glass panels having various shapes. Furthermore, it is possible to facilely control a gap between the glass panels, to easily fabricate the double glass panel having various shapes with the same quality, and also to fabricate open type double glass and latticed window. In addition, due to excellent elasticity and elastic recovery, it has high durability against pressure, it is free from shearing stress generated by its relaxation and contraction motion, and it has also high durability against temperature and wind pressure due to flexibility of RPS.
  • a cable 31 and a junction box 30 are disposed at an upper center portion of the double glass module 10.
  • the junction box 30 is attached to an upper portion of the double glass module 10 and the cable 31 is connected.
  • a ribbon (not shown) for connecting multiple solar cells is connected to the cable.
  • Fig. 8 is a cross-sectional view showing light incident efficiency of a refractive tempered glass panel according to an embodiment of the present invention. Even though light is incident in any directions, the light is allowed to be vertically incident to the cell through the refractive tempered glass panel for optimizing refraction of light, thereby optimizing an incident angle of the light.
  • a double glass module 10 is vertically installed on the base member 2 and then supported by a supporting frame 20 formed of a metallic material.
  • the double glass module 10 is comprised of an external tempered glass panel 11, a first EVA film 12, a cell 13, a second EVA film 14, a glass ink coated layer 15c and an internal tempered glass panel 18, when seeing from a left side thereof.
  • the external and internal tempered glass panels 11 and 18 are formed of tempered glass.
  • the first and second EVA films 12 and 14 are an EVA film.
  • the cell 13 is a typical silicon semiconductor cell.
  • a desired design pattern is screen-printed on a surface of the internal tempered glass panel 18 using glass ink and then heat-cured at a temperature of 650°C.
  • edge portions between the internal and external tempered glass panels 11 and 18 are treated by a sealant 19a, 19b.
  • the first sealant 19a is TPS and the second sealant 19b is Thiokol.
  • the second embodiment is the same as the first embodiment except that a refractive tempered glass panel having a triangular concavo-convex structure is used as the external and internal tempered glass panels 11 and 18 and a front corner angle of the triangle is 55 degrees, as shown in Fig. 8 .
  • a sealant comprised of an aluminum spacer, moisture absorbent and butyl is used instead of the first sealant 19a of the first embodiment,
  • Table 1 First embodiment Comparative example Total resistance of heat transmission 0.661m 2 K/W 0.356m 2 K/W Adiabatic exponent 185 100 Dew condensation (temperature of internal glass panel) 16.2°C 13°C Heat conductivity 0.053W/mK 0.108W/mK Pressure resistance (24hour, load of 200kg) No changing in thickness Reduction in thickness of 7.1% Pressure resistance (90°C, load of 10kg, 14drays) No changing Reduction in butyl
  • thermal insulation performance in the embodiment is increased by 85% compared with the comparative example, and temperature of the internal glass panel in the embodiment is improved by 3.2°C compared with the comparative example, and the dew condensation is remarkably improved, and also the embodiment has more excellent pressure resistance (high load and temperature).
  • the solar cell module for integration into buildings of the present invention which can be used as an exterior material for the buildings, has the design elements, it is possible to maximize an exterior effect and also to produce high value modules. And in case of the reflective design sheet, it is possible to prevent temperature rise and to increase the efficiency by reflecting sunlight.
  • the refractive tempered glass panel it is possible to always allow the light to be vertically incident to the cell, thereby increasing the energy efficiency, and thus it is possible to produce more electricity.
  • the double glass module including the external and internal tempered glass panels since various design patterns can be applied to the double glass module including the external and internal tempered glass panels, it is possible to improve the appearance of the buildings and to provide the awning effect according to an injection degree of glass ink. And it is also possible to provide thermal insulating and noise preventing effects by using the double glass module including the external and internal tempered glass panels. Since the double glass module is directly applied to the external wall of the buildings, it can be facilely disposed at the buildings without installing separate internal walls.
  • the double sealing system including TPS(Thermo Plastic System)
  • TPS Thermo Plastic System

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  • Engineering & Computer Science (AREA)
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  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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  • Photovoltaic Devices (AREA)
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EP09842733.9A 2009-04-03 2009-07-09 Module de cellule solaire comportant des couches conçues pour une intégration dans des bâtiments Active EP2416374B1 (fr)

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KR1020090028771A KR101180234B1 (ko) 2009-04-03 2009-04-03 디자인층을 구비한 건물 일체형 태양전지 모듈
PCT/KR2009/003749 WO2010114196A1 (fr) 2009-04-03 2009-07-09 Module de cellule solaire comportant des couches conçues pour une intégration dans des bâtiments

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Also Published As

Publication number Publication date
EP2416374A4 (fr) 2017-07-05
KR101180234B1 (ko) 2012-09-05
US20120012163A1 (en) 2012-01-19
JP2012522392A (ja) 2012-09-20
EP2416374B1 (fr) 2021-06-16
KR20100110442A (ko) 2010-10-13
WO2010114196A1 (fr) 2010-10-07
CN102388459A (zh) 2012-03-21
JP5327923B2 (ja) 2013-10-30

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